An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13974
Reference (s):
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932b
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae
- https://lkml.org/lkml/2020/3/22/482
- MLIST:[debian-lts-announce] 20200812 [SECURITY] [DLA 2323-1] linux-4.19 new package
- URL: https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html